Men are not gods and they ought to know it. We shall never dominate nature. The mountaineer is to be pitied who sees in mountains nothing but adversaries he has to conquer -- who does not know the feeling of gratitude, and the feeling of his own insignificance in the face of nature.

Popper's idea that men are insignificant compared to nature applies to himself: Popper is insignificant next to a zebra or a pile of dirt.

At least that's what he says. I think that is ridiculous. I think Popper had more good ideas while walking over one hill than all zebras have ever had.